期刊
JOURNAL OF RARE EARTHS
卷 36, 期 3, 页码 243-247出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jre.2017.07.013
关键词
Optical materials; Luminescence; Phosphors; Rare earths
资金
- National Natural Science Foundation of China [51362028]
- Nature Science Fund of Science and Technology Department of Jilin Province [20130101035JC]
This paper investigates the photoluminescence properties of NaCaTiNbO6:Pr3+ and NaCaTiNbO6:Pr3+, Bi3+ phosphors. NaCaTiNbO6:Pr3+ and NaCaTiNbO6:Pr3+, Bi3+ powder were synthesized successfully by solid state reaction method. Phase purity was checked using X-ray powder diffractometry (XRD). The excitation and emission spectra were recorded to elucidate the photoluminescence properties of NaCaTiNbO6:Pr3+ and NaCaTiNbO6:Pr3+, Bi3+. Furthermore, fluorescence lifetime measurements were performed. The excitation spectra of NaCaTiNbO6:Pr3+ show a main band centered at around 357 nm. The luminescence spectra of NaCaTiNbO6:Pr3+ exhibit a red emission peak at 615 nm from the D-1(2) -> H-3(4) transition of Pr3+ ions. With the introduction of the Bi3+ ion into NaCaTiNbO6:Pr3+, the luminescence intensity is enhanced nearly two times. Meanwhile, the absorption band edge of NaCaTiNbO6:Pr3+ is shifted from 380 to 420 nm. Thus, this study shows that the red phosphor NaCaTiNbO6:Pr3+ incorporated with Bi3+ is advantageous for light-emitting diode applications. (C) 2018 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
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